Welcome to my site of Railway Signaling. During one of my undergrad
training, I was attached to the Signal and Telecommunication Department of the
Sri Lanka Railways. It was amazing to learn how a set of simple
engineering techniques put together form the bottom line safety gear of the railways. Believe me; no Differential Equations or Discrete Cosine
Transforms! Just relays, sensors, power supplies and of course signal
heads. Yes, it is a centaury old system, but, still serves its purpose.

Following are the elements of signaling as used in Sri Lanka Railways.